EP3878084A1 - Machine d'alimentation sans interruption - Google Patents
Machine d'alimentation sans interruptionInfo
- Publication number
- EP3878084A1 EP3878084A1 EP19798732.4A EP19798732A EP3878084A1 EP 3878084 A1 EP3878084 A1 EP 3878084A1 EP 19798732 A EP19798732 A EP 19798732A EP 3878084 A1 EP3878084 A1 EP 3878084A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- machine
- asi
- drum
- poles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/28—Arrangements for balancing of the load in networks by storage of energy
- H02J3/30—Arrangements for balancing of the load in networks by storage of energy using dynamo-electric machines coupled to flywheels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/066—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems characterised by the use of dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/043—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with a radial airgap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/11—Structural association with clutches, brakes, gears, pulleys or mechanical starters with dynamo-electric clutches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Definitions
- 1 / invention relates to an ASI uninterruptible power supply machine.
- ASI machines are mainly intended to safeguard users sensitive to disturbances of an electrical network, that is to say loads at the user level, such as for example intensive care services of hospitals or companies of storage of digital data , highly computerized services, for which an interruption of the electricity network for a few milliseconds endangers human lives or causes significant financial costs.
- an ASI machine comprising a synchronous machine with low internal impedance capable of operating as a motor or as an alternator, this synchronous machine being coupled to an accumulator with a large reserve of kinetic energy which is stored in a rotating metallic mass.
- a main shaft rotatably mounted in the carcass and being coupled with the synchronous machine
- a hollow coaxial drum which can rotate freely around the main axis and independent of it; - a motor, called a Pony motor, to launch the drum up to a certain speed given when starting the UPS to accumulate kinetic energy in the drum;
- This machine is connected between the network and user loads via an inductor.
- the drum In a system without network cut-off, the drum is launched at a certain speed of, for example, 3000 rpm, while the speed of the main shaft with the claw rotor and the rotor of the synchronous machine is maintained at a higher speed. low of for example 1500 rpm.
- the speed difference constitutes the kinetic energy available to drive the synchronous machine as an alternator in the event of a network failure.
- the life of the bearings which support the main shaft in the carcass and the drum on the shaft is related to the relative speed of these bearings not exceeding 1500 rpm in one example given above;
- the ASI machine of EP 1.533.884 is dimensioned in such a way that when a power cut occurs, the machine has sufficient kinetic energy to ensure a minimum autonomy of about 12 seconds with sufficient output power to supply the users.
- the field of use of such a machine is limited as to its autonomy and as to the power to be supplied to the users and as for the recovery time after a network failure so that the machine is quickly ready to intervene following a new breakdown of it.
- the object of the invention is to improve the performance of the ASI machine as described in EP 1,533,884 and to considerably increase the electrical power which can provide the kinetic energy accumulator beyond the maximum power that the accumulator of the ASI machine from EP 1.533 can provide. 884 in order to be able to guarantee a wider power range and greater flexibility of use of a higher output power combined with a reduced autonomy, for example this autonomy being sufficient for certain applications such as digital data storage centers or various processes that can stop in seconds without harming users.
- This objective is achieved by replacing the claw rotor of the ASI machine of EP 1,533,664 with a rotor of the same size and more conventional architecture of an alternator rotor, that is to say provided an iron core with a certain number of poles delimited by longitudinal notches distributed around the circumference of the core which, for each pole, is provided with a coil wound in the notches around the pole concerned, but dimensioned in such a way that the cumulative width of all of the poles in their narrowest part is at least equal to the cumulative width of all of the notches in their widest part, preferably that the minimum cumulative width of all of the poles is at least double the maximum cumulative width of all the notches.
- the active area of the poles is increased at the same time as the surface of the notches in which the active copper conductors are housed is reduced.
- This increases the section of the polar cores compared to the section of the notches which contain the copper, the section of the poles being the active surface which intervenes for the electromagnetic coupling between the drum and the rotor of the accumulator in order to maintain a longer time. sufficient torque to drive the synchronous machine in its alternator function, even for powers significantly higher than those obtained in the case of the claw rotor.
- the rotor is specially designed to create a lot of electromagnetic losses in the drum in order to create a greater torque between the drum and the rotor, without worrying about achieving a beautiful sinusoidal distribution of the induction in the air gap and therefore to achieve a high power kinetic energy accumulator which can lead to a higher power alternator, even if it means reducing the autonomy of the machine below 12 seconds for the very large powers of the load in the event of a network failure, which is completely acceptable for certain applications where the autonomy can be reduced in favor of a higher power.
- the coupling will for example be lost as soon as the speed of the drum has dropped below 1700 rpm for a rotor speed of 1500 rpm. There is therefore a kinetic energy corresponding to a speed difference of 200 rpm which is unused.
- the coupling will remain active longer up to 1500 rpm, which gives better use of the kinetic energy stored in the drum below 1700 rpm and therefore autonomy. longer.
- an UPS machine can be produced which, instead of the machine known from EP 1,553,884, is characterized by greater autonomy, but which also makes it possible to couple the new energy accumulator with an additional synchronous machine.
- high power for example a double power, to protect users, even if it means reducing the autonomy during which this double power can be protected.
- An experimental UPS machine according to the invention has been produced showing surprising improved performance. compared to the ASI machine of EP 1.533.884 with a claw rotor of the same size:
- the manufacture of the new rotor is of more conventional construction and is therefore less costly than the manufacture of the claw rotor;
- the new rotor reduces the risks of residual magnetization of the machine shaft and consequently its harmful effects on the life of the bearings (no axial coil).
- the stator of the Pony motor is preferably produced in the form of a Gram ring with a to.ro ⁇ da.1 winding which takes up less space and makes it possible to produce an accumulator of kinetic energy with a relatively short bulk.
- the invention also relates to a rotor for an energy accumulator of an ASI machine and an accumulator equipped with such a rotor, which comprises an iron core with a number of poles delimited by longitudinal notches distributed around the circumference of the core which, for each pole, is provided with a coil wound in the notches around the pole concerned and whose cumulative width of all of the poles in their narrowest part is at least equal to the cumulative width of all of notches in their widest part, preferably the cumulative width of all the poles in their narrowest part is at least double the width of all the notches in their widest part.
- 1 / invention also relates to the use of such a rotor in a kinetic energy accumulator of an ASI machine, the energy accumulator
- a main shaft rotatably mounted in the carcass and being coupled with the synchronous machine
- a hollow coaxial drum which can rotate freely around the main axis and independent of it;
- a motor called a Pony motor, to start the drum up to a certain speed given when starting the UPS to accumulate kinetic energy in the drum;
- the rotor being installed in place of the claw rotor on the main shaft in a coaxial manner with the drum and with the same dimensions, the rotor coils being connected with an exciter to produce a electromagnetic coupling between the drum and the rotor in the event of a network failure in order to recover the kinetic energy stored in the drum in order to drive the synchronous machine when a DC electric current is sent to the coils of the rotor via the exciter.
- FIG. 1 schematically represents an electricity network provided with an AS machine! with a kinetic energy accumulator according to the invention
- Figure 3 shows in side view the rotor F3 indicated in Figure 2;
- Figure 4 shows the section indicated by line IV-IV in Figure 3;
- FIG. 5 shows, in comparison with FIG. 4, a conventional rotor of an alternator of the same number of poles
- FIG. 6 shows a comparison between the graph of the available energy as a function of the output power for an ASI machine according to the invention and for an ASI machine according to EP 1,533,884 of the same scope and in which replaced the claw rotor by a rotor according to the invention;
- Figures 7 and 8 show the same comparison but then for the autonomy curves as a function of the power for the two machines, respectively for the output power as a function of the differential speed between the drum and the main axis 50 msec after excitement;
- FIG. 9 represents another electrical network according to the invention.
- FIG. 10 shows a section like that of Figure 4 for another embodiment of the core of a rotor of kinetic energy accumulator according to the invention.
- FIG. 1 schematically represents an urban or industrial electrical network 1, supplying electrical energy to a sensitive load 2 of a site, the load 2 being constituted by all the users in a factory or in a data center and needing to be protected by an uninterruptible power supply machine, called an ASI 3 machine, which must intervene to supply load 2 in the event of a network failure 1.
- ASI 3 machine an uninterruptible power supply machine
- the load 2 is connected to the network 1 via a three-terminal inductor 4, that is to say with an input terminal 4a connected to the network 1 by means of the an input circuit breaker 5, an output terminal 4b connected to the load 2 by means of an output circuit breaker 6 and an intermediate terminal 4c to which the ASI machine 3 is connected.
- Choke 4 limits the current supplied by the UPS machine to the network in the event of a network failure 1 in order to protect the load 2 from a too high voltage drop and a significant power call in the first moments after the network failure 1 and before the opening of the circuit breaker 5.
- the ASI machine 3 mainly consists of a synchronous machine 9 with low internal impedance and of a kinetic energy accumulator 10 according to the invention, which are mounted on a rotary main shaft 11; the latter being mounted in a carcass 12 by means of bearings 13.
- the main shaft also carries a flywheel 14.
- the synchronous machine 4 can operate as a motor or as an alternator and consists in a known manner of a rotor 15 mounted on the main shaft surrounded by a stator 16 and of an exciter 17 with a rotor 17a connected with the rotor 15 and a stator 17b which can be connected to an external electrical source to control the operation of the synchronous machine 9.
- the accumulator 10 comprises a hollow steel accumulator drum 18 which can rotate freely around the main axis 11 and is independent of the latter by means of bearings 19 mounted on the main shaft 11. Inside the drum 1.8 a coaxial rotor 20 is fixed on the main shaft. 11.
- the rotor 20 consists of a mainly cylindrical steel core with a certain number of poles 22 delimited by radial notches 23 parallel to the main axis 11.
- the notches have a maximum width A as shown in Figures 4, the notches 23 being distributed uniformly around the circumference of the core 21.
- the poles 22 have a minimum width B as shown in FIG. 4 which represents the active width of these poles.
- Each pole 22 is provided with a coil 24 in the form of a copper electrical conductor which is wound in the notches 23 around the pole 22 concerned.
- the poles When a current is sent into the coils 24, the poles become magnetic poles 22 North and South to form an electromagnetic coupling between the rotor 20 and the drum 18.
- the rotor 20 is an eight-pole rotor, although the number of poles may be different.
- the accumulator 10 is provided with an exciter 25 with a rotor 25a which is fixed on the main shaft 11 and which is electrically connected with the windings 24 of the rotor 20 of the accumulator 10 and with a stator which can be powered by a external electrical source to control the behavior of the accumulator 10.
- 1 / accumulator 10 also includes an electric motor, called a Pony motor 26, made to start the drum 18 up to a certain speed when starting the ASI machine 3 and to accumulate kinetic energy in the drum 18.
- the Pony motor is preferably a Gram ring known as described in EP 1,533,884 with a toroidal winding connected to an external frequency converter not shown.
- the invention is specifically characterized by the distribution between the width A and the width B, or between the maximum width of the notches 23 and the active width of the poles 22, all of the minimum widths of all the poles 22 preferably being at least equal to all of the maximum widths of the notches 23 in the case of the invention illustrated in FIG. 4.
- Such an architecture is atypical if we compare it with the architecture of a conventional rotor of an alternator with the same span and the same number of poles as shown in FIG. 5.
- a conventional rotor is for example known from the application EP 2,989,713, although for a machine with a completely different configuration than that of the present invention.
- This conventional rotor of FIG. 5 is dimensioned with a completely different relationship between the width C of the notches and the active width D of the poles, in order to be able to operate continuously.
- the space (the section) available in the notches 23 for the coils 24 is approximately 2 to 3 times less than that (in the case of the invention in comparison with the rotor conventional .
- the flux passage surface is of the order of 3 to 4 times less than the corresponding surface of the rotor 20 according to the invention and the ampere-turns per coil barely 10 to 20% greater to those of the rotor 20 of the invention, under the same current density conditions.
- the synchronous machine 9 is supplied by the network and operates as a motor to drive the main shaft 11 at a given speed of 1500 rpm for example, corresponding to the frequency of the network 1.
- the rotor 20 of the accumulator 10 and the rotors 17a and 25a of the exciters 17 and 25 therefore rotate at this same speed.
- the drum 18 is maintained at a speed greater than the speed of the main shaft 11, typically between 1900 and 3000 rpm, to accumulate sufficient kinetic energy to support the load 2 in the event of a network cut 1 with autonomy desired for example 12 seconds.
- the drum speed is adjusted according to the load by means of the Pony 26 motor and its frequency converter. If the load 2 increases, immediately the speed of the drum 18 is increased to be able to cope with a fault in the network 1 with sufficient energy.
- the ASI machine 3 also plays the role of network conditioner 1 by its combination with the inductor 4, the low impedance of the synchronous machine 9 and the flywheel inertia. It constitutes a filter vis-à-vis all short-term disturbances which do not exceed 60 to 80 ms which would come on network 1 as well as a filter vis-à-vis the harmonics which would be present on the voltage of the load 2 or the mains voltage.
- the choke A is there to limit the importance of the current that can be returned to the network 1 and to reduce the level of harmonics coming from the network towards the load and vice versa.
- the kinetic energy stored in the drum 18 with a relative speed with respect to the main shaft of 1500 rpm for example at full power is used to drive the synchronous machine 9 in its alternator function to supply the load 2.
- the speed of the drum 18 decreases and gets closer and closer to the speed of the main axis until the moment when the electromagnetic coupling between the drum and the rotor 20 of accumulator 10 becomes insufficient to continue driving the synchronous machine 9.
- FIG. 6 represents the energy storage capacity of the ASI machine 3 expressed in MJ as a function of the output power of the ASI machine 3 to be delivered to the load 2.
- the accumulated energy expresses the product of autonomy and power of the type of the ASI 3 machine.
- the accumulated energy is practically constant over the entire range of output powers, which is more practical for characterizing the ASI 3 machine with a single parameter like an 8.2 MJ machine, making it possible to easily deduce the '' autonomy depending on the power of the load 2 to be protected, if necessary giving an autonomy of 16.4 seconds for a load of 500 kW, an autonomy of 8.2 seconds for a load 2 of 1000 kW and 5.5 dry for 1500 kW. Although at full power, for some applications, it does not reach a range of 12 seconds, a shorter range is sufficient. This provides a larger area of f use with UPS machines big powers but weak pertainings. This means that for the same price of a machine with medium power and great autonomy, one can have a machine with double or even triple power, and with shorter autonomy, which was not currently possible.
- Figure 7 shows the diagram of the autonomy of the ASI machine in both cases.
- the ASI 3 machine according to the invention has better autonomy than the old machine in the whole range of powers thereof and still retains an acceptable autonomy for certain applications for higher powers.
- FIG. 8 shows the output power of the ASI machine 3 as a function of the relative speed between the drum 18 and the rotor on main shaft 11, 50 msec after I n application of an intermediate voltage of 300VDC on .1 / exciter 25.
- the core 21 represented in FIG. 10 is a core 21 of an alternative rotor 20 according to the invention which differs from the core of the rotor 20 of FIG. 4 in that the notches 23 are not distributed uniformly around the core and that therefore the width B of the poles 22 is different according to their angular position, with a configuration integrating wide poles 22 ', having a minimum width B', and narrow poles 22 ", having a minimum width B".
- the poles 22 are organized as follows: the poles 22 must be alternately N & S at the periphery of the rotor 20;
- the wide poles 22 ′ must be multiple of two and alternately N & S at the periphery of the rotor 20;
- the narrow poles 22 "must be multiple of two and alternately N & S where S & N at the periphery of the rotor 20;
- the sum of the widths B 'and B "of all the poles 22' and 22" at their narrowest point must be at least equal to and preferably clearly greater than the sum of the widths C of all the notches 23 at their widest place, which in the case of Figure 10 is located on another diameter.
- Such an organization of the poles can be envisaged with the aim of modifying the torque characteristic as a function of the relative speed between the rotor 20 and the drum 18.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Synchronous Machinery (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19798732.4T DE19798732T1 (de) | 2018-11-08 | 2019-10-29 | Unterbrechungsfreie stromversorgungsmaschine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE20185785A BE1026772B1 (fr) | 2018-11-08 | 2018-11-08 | Machine ASI (Alimentation Sans Interruption) |
| BE20195571A BE1026773B1 (fr) | 2018-11-08 | 2019-08-30 | Machine ASI (Alimentation Sans Interruption) |
| PCT/IB2019/059252 WO2020095149A1 (fr) | 2018-11-08 | 2019-10-29 | Machine d'alimentation sans interruption |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3878084A1 true EP3878084A1 (fr) | 2021-09-15 |
| EP3878084B1 EP3878084B1 (fr) | 2026-03-25 |
Family
ID=64556622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19798732.4A Active EP3878084B1 (fr) | 2018-11-08 | 2019-10-29 | Machine d'alimentation sans interruption |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11652363B2 (fr) |
| EP (1) | EP3878084B1 (fr) |
| BE (2) | BE1026772B1 (fr) |
| DE (1) | DE19798732T1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114257030A (zh) * | 2021-11-16 | 2022-03-29 | 国家电投集团科学技术研究院有限公司 | 具有电磁耦合器的飞轮储能系统 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1352320A (en) * | 1970-04-02 | 1974-05-08 | Reyrolle Parsons Ltd | Dynamo-electric machines |
| EP0741444A1 (fr) * | 1995-05-03 | 1996-11-06 | Ford Motor Company | Machine électrique rotative |
| US20100231181A1 (en) * | 2009-03-10 | 2010-09-16 | Ming Xu | Novel starter-generator with improved excitation |
| US20160020675A1 (en) * | 2014-07-21 | 2016-01-21 | Hamilton Sundstrand Corporation | Electrical machines with liquid cooling |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1364072A (fr) * | 1963-05-07 | 1964-06-19 | Prec Mecanique Labinal | Perfectionnements apportés aux machines rotatives, notamment aux ralentisseurs, à courants de foucault |
| BR8804947A (pt) * | 1988-09-21 | 1990-05-15 | Brasil Compressores Sa | Motor assincrono monofasico de dois polos magneticos |
| JPH05115169A (ja) * | 1991-10-21 | 1993-05-07 | Sawafuji Electric Co Ltd | 制動装置 |
| NL1021137C2 (nl) | 2002-07-23 | 2004-01-27 | Fondel Finance B V | Steunelement voor bevestiging aan bot. |
| JP4693393B2 (ja) | 2003-11-19 | 2011-06-01 | キヤノン株式会社 | 現像剤補給装置 |
| BE1015793A3 (fr) | 2003-11-19 | 2005-09-06 | Ks Res Sociutu Anonyme | |
| BE1018519A5 (fr) * | 2009-04-06 | 2011-02-01 | Ks Res Sociutu Anonyme | Moteur electrique a induction a courant alternatif. |
| AT514240B1 (de) | 2013-04-22 | 2015-02-15 | Hitzinger Gmbh | Energiespeicher und Vorrichtung zur unterbrechungsfreien Energieversorgung |
| BE1022140B1 (fr) * | 2014-05-16 | 2016-02-19 | KS RESEARCH société anonyme | Systeme d'alimentation electrique sans coupure |
-
2018
- 2018-11-08 BE BE20185785A patent/BE1026772B1/fr active IP Right Grant
-
2019
- 2019-08-30 BE BE20195571A patent/BE1026773B1/fr active IP Right Grant
- 2019-10-29 EP EP19798732.4A patent/EP3878084B1/fr active Active
- 2019-10-29 US US17/292,354 patent/US11652363B2/en active Active
- 2019-10-29 DE DE19798732.4T patent/DE19798732T1/de active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1352320A (en) * | 1970-04-02 | 1974-05-08 | Reyrolle Parsons Ltd | Dynamo-electric machines |
| EP0741444A1 (fr) * | 1995-05-03 | 1996-11-06 | Ford Motor Company | Machine électrique rotative |
| US20100231181A1 (en) * | 2009-03-10 | 2010-09-16 | Ming Xu | Novel starter-generator with improved excitation |
| US20160020675A1 (en) * | 2014-07-21 | 2016-01-21 | Hamilton Sundstrand Corporation | Electrical machines with liquid cooling |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2020095149A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114257030A (zh) * | 2021-11-16 | 2022-03-29 | 国家电投集团科学技术研究院有限公司 | 具有电磁耦合器的飞轮储能系统 |
| CN114257030B (zh) * | 2021-11-16 | 2024-05-10 | 国家电投集团科学技术研究院有限公司 | 具有电磁耦合器的飞轮储能系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| US11652363B2 (en) | 2023-05-16 |
| BE1026772B1 (fr) | 2020-06-09 |
| DE19798732T1 (de) | 2022-02-24 |
| US20220085647A1 (en) | 2022-03-17 |
| BE1026772A1 (fr) | 2020-06-05 |
| EP3878084B1 (fr) | 2026-03-25 |
| BE1026773A1 (fr) | 2020-06-05 |
| BE1026773B1 (fr) | 2020-06-08 |
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